package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @author ：XXXX
 * @date ：Created in 2019/12/11
 * @description ：
 * @version: 1.0
 */
@RestController
@RequestMapping("/report")
public class ReportController {
    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @RequestMapping("/getMemberReport")
    public Result getMemberReport(){
        Map data = new HashMap();
        List<String> months = new ArrayList<>();
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MARCH,-12);
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MARCH,1);
            months.add(new SimpleDateFormat("yyyy.MM").format(calendar.getTime()));
        }
        data.put("months",months);
        List<Integer> memberCount = memberService.findMemberCountByMonths(months);
        data.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,data);

    }
    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport(){
       List<Map<String , Object>> setmealCount =  setmealService.findSetmealCount();

       List<String> setmealNames = new ArrayList<>();
       for (Map<String,Object> map : setmealCount){
           String name = (String) map.get("name");
           setmealNames.add(name);
       }
       Map map = new HashMap();
       map.put("setmealNames",setmealNames);
       map.put("setmealCount",setmealCount);
        return new Result(true,MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,map);
    }
    @Reference
    private ReportService reportService;
    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){
        Map<String,Object> map = null;
        try {
            map = reportService.getBusinessReport();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,map);
    }
    //运营数据报表导出
    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request , HttpServletResponse response){
        Map<String,Object> result = null;
        try {
            //调用service查询运营数据
            result = reportService.getBusinessReport();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //使用POI将查询到的数据写入到Excel文件中
            String templateDirPath = request.getSession().getServletContext().getRealPath("template");
            String filePath = templateDirPath + File.separator + "report_template.xlsx";
            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(new File(filePath)));
            //获取第一个Sheet工作表
            XSSFSheet sheet = excel.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            //热门套餐
            int num = 12;
            for (Map map : hotSetmeal){
                row = sheet.getRow(num++);
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row.getCell(4).setCellValue(name);
                row.getCell(5).setCellValue(setmeal_count);
                row.getCell(6).setCellValue(proportion.doubleValue());
            }

          //通过输出流将Excel文件下载到客户端
            ServletOutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");
            excel.write(out);
            out.flush();
            out.close();
            excel.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}
